adapt to ocrd>=2.54 url vs local_filename

# Conflicts:
#	qurator/eynollah/processor.py

qurator/eynollah/processor.py

@@ -23,7 +23,11 @@ class EynollahProcessor(Processor):
         page = pcgts.get_Page()
         # XXX loses DPI information
         # page_image, _, _ = self.workspace.image_from_page(page, page_id, feature_filter='binarized')
-        image_filename = self.workspace.download_file(next(self.workspace.mets.find_files(local_filename=page.imageFilename))).local_filename
+        if not('://' in page.imageFilename):
+            image_filename = next(self.workspace.mets.find_files(local_filename=page.imageFilename)).local_filename
+        else:
+            # could be a URL with file:// or truly remote
+            image_filename = self.workspace.download_file(next(self.workspace.mets.find_files(url=page.imageFilename))).local_filename
         Eynollah(
             self.resolve_resource(self.parameter['models']),
             self.logger,